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Corsair SF600 Platinum PSU Review: Setting The SFX Performance Bar Higher

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Ripple Measurements

To learn how we measure ripple, please click here.

The following table includes the ripple levels we measured on the SF600’s rails. The limits, according to the ATX specification, are 120mV (+12V) and 50mV (5V, 3.3V, and 5VSB).

Test12V5V3.3V5VSBPass/Fail
10% Load5.7mV6.2mV4.1mV5.6mVPass
20% Load8.5mV6.3mV4.8mV7.2mVPass
30% Load11.2mV6.6mV5.0mV7.6mVPass
40% Load13.5mV7.1mV5.5mV9.0mVPass
50% Load17.7mV7.7mV6.3mV9.1mVPass
60% Load21.2mV8.1mV6.9mV11.5mVPass
70% Load18.2mV11.0mV8.1mV11.2mVPass
80% Load20.4mV10.6mV9.0mV13.0mVPass
90% Load23.1mV10.9mV9.1mV14.4mVPass
100% Load25.2mV10.7mV9.7mV16.4mVPass
110% Load27.9mV11.0mV10.3mV17.9mVPass
Cross-Load 110.7mV11.9mV9.8mV5.9mVPass
Cross-Load 225.6mV8.5mV6.4mV18.7mVPass
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Ripple suppression is excellent on all of the rails without the need for in-cable capacitors, which most system builders hate dealing with.

Ripple Oscilloscope Screenshots

The following oscilloscope screenshots illustrate the AC ripple and noise registered on the main rails (+12V, 5V, 3.3V and 5VSB). The bigger the fluctuations on the screen, the bigger the ripple/noise. We set 0.01 V/Div (each vertical division/box equals 0.01V) as the standard for all measurements.  

Ripple At Full Load

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Ripple At 110-Percent Load

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Ripple At Cross-Load 1

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Ripple At Cross-Load 2

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Aris Mpitziopoulos
Aris Mpitziopoulos is a Contributing Editor at Tom's Hardware US, covering PSUs.